Key-fastener



(Model.)

A. W. SIGERSON.

KEY FASTBNER.

Patented Oct. 20, 1885.

UNTTTLD STATES PATENT @Erica AMBROSE V. SIGERSON, OF BURLINGTON, IOVA.

KEY-FASTENER.

PECIFICATION forming part of Letters Patent No. 328,725, dated October 20,1885.

Application filed December 1Q, 1884. Serial No. 150,159.

To all whom it may concern.-

Be it known that LAMBRosn W. SIGERsoN, of Burlington, in the county of Des Moines and State of Iowa, have invented certain new and useful Improvements in Key-Fasteners, of which the following is a specification.

My invention relates to that class of devices which are employed to retain keys in locks, particularly locks of doors, when the locking operation is completed; and it consists in the employment of a simple and inexpensive blank of sheet metal-say, of brass-attached to the key of an ordinary door or other lock, preferably by a swiveled link connection, the blank end. of such link working freely in along semicircular slit in the blank, and by a recess in its body portion adapted to be slipped over and embrace the knob-spindle when the key has been actuated to lock the door, by moving the blank end of the linkconnection in the semioircular slit, to which adjusted position the blank is held by passing such end into a back slot or enlargement of the slit, whereby the key is prevented from being turned in the lock by nippers or other means from the outside, or from being pushed into the room from the outside and a skeleton-key inserted to engage with the mechanism of the lock, and the burglarious unlocking of the door thereby prevented. This Same blank may,without any change or additional expense,serve as a tag to designate the number of the room to which the key belongs as well as a fastener for such key.

In the drawings, Figure l is a front view of a door and lock with my fastener adjusted thereto, showing` in dotted lines the mode of applying` the same. Fig. 2 is a side view of said fastenerwhen adjusted to the lock of a door; and Fig. 3, a modified form of my fastener.

A is an ordinary door-lock secured to the door B in the usual manner. c is the doorknob, and c the knob-spindle. C is the key, to the ring or bow of which is hung a link, D, the other end of the link being swiveled to a rivet or sliding piece, e3, working freely in a long semicircular slit, e', in the fastener-blank E. E is the fastener-blank of suitable sheet nietal-say,of brass-constructed with a vertical slot or opening, e, extending a consider- (hlodel.)

able distance from its base into the body por- Vtion thereof, and having a long semicircular slit, e', (with an enlargemenhez, at each end,) on its outer end, in which the rivet or sliding piece e works.

The key, to which by the link (one end of which is hung on its ring or bow and the other swiveled to a rivet or sliding piece working in the long selnicircular slit in the blank, as above described) is adjustably attached the fastener-blank, is placed in the key-hole and turned to lock the door. The blank is then placed in the position shown by the dotted lines in Fig. l, when the rivet or sliding piece is about in the center of the length of the semicircular slit in the blank, as shown, and by sliding the rivet downward in the slit, and of consequence moving the blank in the direction of the arrow, the latter is received between the knob and the face of the lock, and by means of the vertical slot in the blank passes over and embraces thc knob-spindle, to which, when adjusted, it is held from disengagement by passing the sliding piece or rivet into the back slot or enlargement at the bottom ofthe slit. Vhen thus adjusted, the key is prevented 'from being turned in the lock or pushed out from the outside, and is held substantially rigid until the fastener is released from the inside. To release the fastener, the rivet or sliding piece is lifted out of the back slot or enlargement at the bottom ot' the semicircular slit and pushed upward,when the blank will slide off the knob-spindle, and the key will be free and may be actuated to unlock the door or be withdrawn from the lock.

Instead of rigid link connecting thekey and the fastener-blank, a chain and ring or other flexible connection may be employed-such, for instance, as the form embodied in Fig. 3 without inipairing the effectiveness of the device.

After the fastener-blank has been adjusted to the knob-spindle of a door, it may,in order to insure greater security against its release by manipulation from the outside, be held in adjustment by a hook working from the doorjamb into a staple formed on the free end of 100 the blank, as shown in dotted lines on the left of Figs. l and 2.

I claimf 1. Akey-fastenei1 consisting of ablank having aknob-spindle recess or slot, a semicircular slit-With enlargement or back slot at one or both ends, and a sliding piece Working in the semicircular slit and connected by a link swiveled to the sliding piece with the key of a door or other lock and adapted t0 engage with the knob-shank of such lock, substantially as described, for the purpose set forth.

2. A key-fastener consisting of ablank having a recess for the knob-spindle and a semicircular slot, a sliding piece Working in said semicircular slot and connected with the key.

A. W. SIGERSON.

Vtnesses:

PAUL GUELICH, O. C. FOWLER. 

